package com.example.tatil.filter;

import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;

import java.io.IOException;

//@WebFilter(urlPatterns = "/*")
public class DemoFilter implements Filter {
    @Override//初始化方法只调用一次
    public void init(FilterConfig filterConfig) throws ServletException {
//        Filter.super.init(filterConfig);
        System.out.println("init初始化方法执行了");
        //放行

    }

    @Override//拦截方法，调用多次
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        System.out.println("拦截到了请求");
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override//销毁方法，只调用一次
    public void destroy() {
//        Filter.super.destroy();
        System.out.println("destroy销毁方法执行了");
    }
}
